Method of forming open mesh bags



June 4, 1940.

METHOD E. SACKNER ET AL OF FORMING OPEN MESH BAGS Filed Dec. 19, 1936 2Sheets-Sheet 1 INVENTOR.

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Julie 9 w. E. SACKNER ET AL 7 2,202,996

METHOD OF FORMING OPEN MESH BAGS l! Filed Dec. 19', 1956 2 Sheets-Sheet2 14 446 Z. 640/070 BY Jo/m E. /7/'//e# 107 ATTORNEYS Patented June 4,1940 UNITED I STATES PATENT OFFICE 2,202,996 METHOD OF FORMING OPEN MESHBAGS Wade E. Sackner and John E. Millett, Grand Rapids, Mich., assignorsto Sackner Bag Company, Grand Rapids, Mich.

Application December 19, 1936, Serial No. 116,760

3 Claims.

This invention relates to improvements in methods of forming open meshbags.

This invention relates to open mesh bags for displaying produce or thelike and particularly to those on which a printed trade-mark isdisplayed. In making such a bag, strands of twisted paperare woven toform an open mesh bag the body of which permits viewing of produce inthe bag and proper ventilation of the produce. It is not practicable toprint a trade-mark or label directly on the mesh as the strands are sofar I apart that it will not show and in our invention we provide anarea on one side only of the bag in which the warp strands are spacedmore closely together than in the rest of the bag and are of acontrasting color so that the trade-mark or label printed thereon willstand out although the produce is not completely hidden.

In the manufacture of such bags heretofore, it has been necessary tomake the bag in two pieces if the trade-mark displaying area were to beon one side only of the bag. This necessitated the making of the twosides of the bag separate and the provision of some stitching operationto join them together. If the bag were to be made in a single piece, thetrade-mark displaying area had to go clear around the bag. This wouldhinder the display of the produce through the bag and would make itnecessary to print on both sides of the bag because the trade-markdisplay area is unsightly if nothing is printed thereon. We produce abag with the trade-mark display area on one side only and do this at oneoperation, eliminating the expense of stitching or the expense ofprinting on both sides of the bag and the less efl'ective display of theproduce in the bag.

The objects of this invention are:

First, to provide a method of producing bags as above set forth at asingle operation.

Second, to provide such a method by which the bags are produced in asingle web to be merely severed and reversed.

Other objects and advantages pertaining to details and economies of ourinvention will appear from the description to follow. The invention isdefined in the claims. Preferred embodiments of our invention areillustrated in the accompanying drawings, in which:

Fig. 1 is a view of the front of a bag made by our method and beforereversal thereof, showing the trade-mark display area.

Fig. 2 is a partial rear view of the bag of Fig. 1.

Fig. 3 is a view showing a web woven to form the bags of Figs. 1 and 2.

Fig. 4 is a sectional view of a bag before reversal.

Fig. 5 is a view of a portion of the bag showing the method of weavingin detail.

Fig. 6 is a sectional view on line 66 of Fig. 5.

Fig. 'l is a sectional view on line of Fig. 5.

Fig. 8 is a detailed sectional view of the bag after reversal, showinghow the single thickness of material is placed inside the finished bag.

Fig. 9 is a view of a web woven to form two rows of bags at a singleoperation.

Fig. 10 is a detailed view of a modification of our invention showing aslightly different type of weave for forming the meshes.

In forming bags according to our invention, a loom is set up for doubleweaving two webs, one superposed on the other, with one web forming oneside of the bags and the other web the other side of the bags. One webis formed of a pinrality of warp strands l disposed in pairs. Theindividual warp strands of each pair are spaced apart but are relativelyclose together while the pairs of warp strands are spaced relatively farapart. We prefer to color the strands l a color which will permit easyviewing of the produce in the bag and have found that a red color isproper for this.

Arranged parallel with the. strands i are a pluralit of white warpstrands 2 spaced relatively ose together to form a trade-mark displayingportion on the finished bag; These strands can be any color that willfully display a trade-mark printed thereon and contrast with the strandsl and 2.

Weft strands 3- of the color of strands l are interwoven with the warpstrands i and 2 and the warp strands I of each pair thereof are woven onopposite sheds of the loom and the adjacent strands 2 are also onopposite sheds from one another. The weft strands 3 are preferably woventwo strands to a single pick but on opposite sheds. This forms an openmesh more satisfactory than single strand mesh with the same strengthand simplifies the weaving of the two webs as will appear. The web thusformed is indicated at l and the other web superimposed thereon isindicated as 5. The web 5 is formed similarly only the warp strands 2are omitted leaving the bag on that side without the trademark displayarea.

At intervals one bag width apart the warp strands ii of the lower webare united with the warp strands l and 2 and all are woven together toform a single thickness of fabrics I (see Fig. 1) to form the bag edges.

One edge of the web as in Fig. 1 is also woven as a single thickness toform the closed end of the bags there made. This is done by manipulatinga few of the warp strands of the edge of both webs so that they arewoven together with the weft strands of both webs and this is carriedout continuously.

,To form the bags, the web of Fig. 1 is severed transversely at 1 andthe bags are reversed so the single thickness of material lies insidethe bag which strengthens the junction as the threads are snubbed whenthe bag is filled.

In Fig. 5 we show in detail the weaving operation above described. Thestrands falling in one web are shown in light outline and those of theother web are shown in heavy outline. The single fabric is shown at thetop of Fig. 5 and the double fabric at the bottom. "ihe weft threads areoffset in the two layers and the warp threads are likewise offset orstaggered so that in making the double web the warp strands areseparated in offset pairs and in the trade-mark display area four of thestrands 2 are separated from a pair of the strands 6.

In Fig. 9 we show a modification of the method in which the bags aremade in pairs extending transversely of the web. The edges are formed asin Fig. 1 by strips I01 and the warp threads at the center are wovencontinuously as a single fabric layer to form the band 8 which is theclosed bottom of the bags. The trade-mark display area is formed at 9 onboth sides as above described.

In Fig. 10 we show a modification of the method in that instead of usingpairs of warp and weft strands as above indicated, we use only singlewarp and weft strands. The warp strands 20I are relatively widely spacedand of a red color and the warp strands 202 are relatively closertogether to form the trade-mark display area and are of a contrastingcolor such as white. The weft strands 203 are the color of strands 2Mand are relatively widely spaced apart. The two webs are double woven asindicated above, using the strands 202 on one web only, and the edgesand closed ends of the bags are formed either as in Fig. 1 or Fig. 9 bya single thickness of material to be severed.

We have shown and described our invention in the forms preferred by usand wish to claim the same specifically and also broadly as pointed outin the appended claims.

Having thus described our invention, what we claim as new and desire tosecure by Letters Patent is:

1. In the method of forming open mesh bags for displaying produce or thelike, each bag having one side formed completely of uniform open meshfor displaying the contents of the bag and the other side formed in partof the same uniform open mesh for displaying produce and in part of openmesh portions of finer mesh suitable for displaying a printedtrade-mark, the steps of double weaving two webs of open mesh fabric toform the sides of the bag by arranging a plurality of strands spaceduniformly and relatively far apart to form the warp threads of theentire web forming the uniform open mesh side of the 7 bag, arranging aplurality of strands spaced similarly to the aforesaid strands to formthe warp threads of a portion only of the web forming the other side ofthe bag, arranging a plurality of threads grouped together and spacedrelatively closer together to form the remaining warp strands of saidother side of the bag, and interweaving in said warp strands of bothwebs weft strands spaced relatively far apart to form two separate websforming the two sides of the bag, and weaving all of the aforesaid warpstrands together with weft strands for a short distance at points spacedlongitudinally on the webs to form a length of single thickness materialto form the bag edges.

2. -In the method of forming open mesh bags for displaying produce orthe like, each bag having one side formed completely of uniform openmesh for displaying the contents of the bag and the other side formed inpart of the same uniform open mesh for displaying produce and in part ofopen mesh portions of finer mesh suitable for displaying a printedtrade-mark, the steps of double weaving two webs of open mesh fabric toform the sides of the bag by arranging a plurality of strands spaceduniformly and relatively far apart to form the warp threads of theentire web forming the uniform open mesh side of the bag, arranging aplurality of strands spaced similarly to the aforesaid strands to formthe warp threads of a portion only of the web forming the other side ofthe bag, arranging a plurality of threads grouped together and spacedrelatively closer together to form the remaining warp strands of saidother side of the bag, and interweaving in said warp strands of bothwebs weft strands spaced relatively far apart to form two separate websforming the two sides of the bag, and weaving all of the aforesaid warpstrands together with weft strands for a short distance at points spacedlongitudinally on the webs to form a length of single thickness materialto form the bag edges; the pairs of warp threads of the individual websbeing in staggered spaced relation whereby when the two webs are woventogether as one web to form the bottom of the bag, the pairs of warps ofone web lie between the pairs of warps of the other web to form a closeweave.

3. A method as set forth in claim 1, wherein the warp strands of themore open mesh for displaying produce are separated in alternate pairsof adjacent strands into an upper and a lower group, whereby the pairsof warp strands of one group are in staggered spaced relationship to thepairs in the other group, and weaving weft strands into the warp strandsof each group to form the separate layers of mesh material with the warpstrands of each pair thereof of each group on opposite sheds and withthe weft strands in each group woven two to a single pick and onopposite sheds.

WADE E. SACKNER. JOHN E. MILLE'I'I'.

